The celebrity chef, whose net worth was estimated at £150m in the 2017 edition, is no longer ranked among the UK’s 1,000 richest people or families.
It follows a difficult few months for Oliver’s UK restaurant group, which has closed 12 of its 37 Jamie’s Italian sites since January after posting £9.9m losses in the last financial year.
In April the chef’s Australian restaurant business was also sold to a new franchise partner after entering voluntary administration.
Last month the Jamie Oliver Restaurant Group announced a 10-year partnership with Aramark that will see it expand in to universities, workplaces and hospital catering in a bid to turn around its fortunes.
Topping the overall Rich List was Jim Ratcliffe, who co-owns Home Grown Hotels – the company behind The Pig restaurants with rooms.
Ratcliffe made his estimated £21.05bn fortune after founding chemical firm Ineos, and is the first UK-born person to top the list since the Duke of Westminster in 2003.
He is also behind the Limewood Hotel in the New Forest, which features a restaurant created by chefs Angela Hartnett and Luke Holder.
BrewDog founders James Watt and Martin Dickie were new additions to the list, with fortunes of £262m and £228m respectively.
The Scottish brewer is now estimated to be worth over £1bn after selling a 22% stake to a US private equity firm in 2017. It also acquired the 14-strong Draft House bar group this year.
Other hospitality entrants include MARC restaurants owner Marlon Abela (£320m), JD Wetherspoon owner Tim Martin (£448m), The Ivy restaurateur Richard Caring (£650m), and Pret A Manger and Itsu founder Julian Metcalfe (£164m).